AAT3258
300mA LDO Linear Regulator with µP Reset
Typical Characteristics
Unless otherwise noted, V
IN
= 5V, T
A
= 25°C.
Initial Power-Up Response Time
(C
BYP
= 10nF)
Turn-Off Response Time
(C
BYP
= 10nF)
V
SHDN
(5V/div)
V
SHDN
(5V/div)
V
OUT
(1V/div)
Time (400µs/div)
V
OUT
(1V/div)
Time (50µs/div)
Turn-On Time From Enable (V
IN
present)
(C
BYP
= 10nF)
6
Line Transient Response
3.04
3.03
V
SHDN
(5V/div)
5
Output Voltage (V)
Input Voltage (V)
V
IN
4
3
2
3.02
3.01
3.00
V
OUT
1
2.99
2.98
V
OUT
= 1V/div
Time (5µs/div)
V
IN
= 4V
0
Time (100µs/div)
Load Transient Response
2.90
2.85
2.80
2.75
2.70
2.65
500
3.00
Load Transient Response 300mA
800
700
Output Current (mA)
Output Voltage (V)
V
OUT
400
300
200
100
0
2.90
Output Current (mA)
Output Voltage (V)
2.80
2.70
2.60
2.50
2.40
2.30
2.20
2.10
V
OUT
600
500
400
300
200
I
OUT
2.60
-100
I
OUT
100
0
-100
Time (100µs/div)
Time (10µs/div)
3258.2006.03.1.6
7
AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
